Change in hemodynamic state during all tachycardia [ Time Frame: <3 hours ] [ Designated as safety issue: No ]

The primary objective is to demonstrate for all tachycardia (supra-ventricular and ventricular tachycardia) a 90 % [two sided confidence interval of 75-100 %] agreement between the true hemodynamic state (stable or unstable) derived from arterial blood pressure measurement and the hemodynamic state determined by tissue perfusion

Secondary Outcome Measures:

Change in hemodynamic state during SVT [ Time Frame: <3 hours ] [ Designated as safety issue: No ]

The secondary objective is to demonstrate for supra-ventricular tachycardia a 90 % [two sided confidence interval of 75-100 %] agreement between the true hemodynamic state (stable or unstable) derived from arterial blood pressure measurement and the hemodynamic state determined by tissue perfusion.

Estimated Enrollment:

30

Study Start Date:

March 2010

Estimated Study Completion Date:

December 2012

Estimated Primary Completion Date:

March 2012 (Final data collection date for primary outcome measure)

Intervention Details:

Procedure: High rate atrial and vetricular stimulation

The right atria and ventricle of the subject will be electrically stimulated at high rate mimicking tachycardia episodes using electrodes placed in the right atria and ventricle.

Other Name: High rate pacing

Procedure: Ventricular Tachycardia induction

A programmed electrical stimulation protocol will be performed using an electrode placed in the right ventricle.

Other Name: VT induction

Detailed Description:

This study is being conducted to evaluate the feasibility to detect hemodynamic changes induced by supra-ventricular or ventricular tachycardia (SVT or VT) using tissue perfusion. Patients with a standard indication for either an electrophysiological study or an implantable cardioverter defibrillators(ICD) implant can be included into this study. Tissue perfusion and arterial blood pressure will be monitored and recorded throughout the electrophysiological procedure or ICD implant testing.

The study will be conducted in two consecutive phases. After completion of study phase I the study phase II will commence. Study phase I will be an acute non-invasive study in patients with an indication for an electrophysiological study, in whom tissue perfusion will be measured non-invasively with an epi-cutaneous tissue perfusion sensor. Phase II will be an acute invasive study in patients with an indication for the implantation of an ICD, in whom the tissue perfusion sensor will be placed in the surgically prepared device pocket on the muscular pectoralis or between the muscular pectoralis major and muscular pectoralis minor.

Eligibility

Ages Eligible for Study:

18 Years and older

Genders Eligible for Study:

Both

Accepts Healthy Volunteers:

No

Criteria

Inclusion Criteria:

Indication for: an electrophysiological study with ventricular stimulation OR the implantation of an implantable cardioverter defibrillator (ICD)

Patient is at least 18 years old.

Patient is able and willing to give informed consent.

Contacts and Locations

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study.
To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below.
For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01088308